Men who kiss their wives in the morning live five years longer than those who don't.
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The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
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Queen ants have one of the longest life-spans of any known insect - typically up to 30 years. Western harvester ant queens can live up to 40 years!
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The lifespan of mammals is about 1 and a half billion heartbeats.
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